blocks ice age ghoul

It had taken seconds for intrigue to devolve into insanity in a thousand simultaneous nightmare-inducing vignettes - none of which I could afford to think significant, save one: the dozen ghouls plunging directly toward me like a football team on the kickoff, huge and fast and ferocious, charging me on a straight line from the enemy gate.
For a second, I thought I saw a dark shape in that gate, the suggestion of an outlined hood and cloak. It might have been Cowl. I'd have hit him with all the fire I could call if I'd had a second to spare, but I didn't.
I brought my shield up as the ghouls came over the floor, and held it fast as the leader of the pack slammed into it in a flare of blue and silver light and a cloud of sparks. The ghoul only howled and began slamming at the barrier with his fists. Every single one hit with the energy of a low-speed car crash, and even with my nifty new bracelet, I could feel the surge of power I needed to keep the shield steady when each of the blows came thundering down.
Boots thudded behind me. Someone was shouting.
Bam, bam, bam. The ghoul slammed against my shield, and it was an almost painful effort to hold it.
"Justine!" Thomas screamed.
I wouldn't be able to hold this ghoul off for long - which was all right, because the other eleven were going to go right around my shield while he forced me to hold it steady against him, and tear me into tiny pieces and eat me. Hopefully in that order.
Bootsteps thudded behind me, and a voice barked. A second ghoul, several steps in front of the rest, flung itself around my shield but was intercepted by Ramirez. It leaped at him and hit that gelatinous-looking green cloud of a shield he used.
What happened to the ghoul as its speed carried its whole mass all the way through the shield does not bear thinking on. But Ramirez was going to need new clothes.
Bam. Bam. BAM !
Murphy screamed, "Harry, Thomas, Ramirez, down!"


White Night Chapter 39, Page 410-411